Phys.org news tagged with:control circuithttp://phys.org/
en-usPhys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.Going places: Microtubule-mediated transport of inhibitory signals critical in stabilizing cell migration polarity(Phys.org)—Microtubules – tubular polymers of tubulin (a globular protein) that are a component of the cytoskeleton found throughout cell cytoplasm – are involved in a range of cellular functions, including the movement of secretory vesicles, organelles, and intracellular substances; cell division (mitosis and meiosis), including the formation of mitotic spindles; and cell polarity, which refers to spatial differences in cellular shape, structure and function. However, the nature of the role of microtubules in cell polarity has yet to be clarified. At the same time, cell migration plays an essential role in many important physiological processes, such as embryogenesis, wound healing, and immune responses; in engineering applications such as tissue regeneration; and, when defective, in causing severe problems such as birth defects, vascular disease and tumor metastasis. A key area for investigation in the linkage between cell polarity and cell migration is that directional cell migration requires a defined polarity, generated by an integrated network of signals, adhesions (the protein-based binding of a cell to a surface or substrate) and cytoskeleton.http://phys.org/news/2014-12-microtubule-mediated-inhibitory-critical-stabilizing-cell.html
Cell & Microbiology Tue, 09 Dec 2014 15:50:01 ESTnews337361959Synthetic biology, genetic engineering and you: Two-component signaling pathways as elements in synthetic circuit design(Phys.org) —Two of the most exciting areas of science and technology, synthetic biology and genetic engineering, have just taken a step towards a brave new future in which large-scale synthetic biological circuits composed of bioengineered logic gates, orthogonal to (that is, independent of) the host in which they operate, will enable a range of applications that include biosensors, gene expression control, cell motility, programmable gene circuits for cell physiology control, and other sophisticated gene circuits. This capability is based on the use of two-component regulatory system – basic stimulus-response coupling mechanisms that allow organisms to sense and respond to changes in many different environmental conditions. These systems consist of a membrane-bound histidine kinase that senses a specific environmental stimulus and a corresponding response regulator that mediates the cellular response, primarily through differential expression of target genes. ((A histidine kinase, or HK, is a multifunctional, typically transmembrane, protein involved in signal transduction across the cellular membrane; a response regulator, or RR, protein is the second component in two-component signal transduction systems.)http://phys.org/news/2014-11-synthetic-biology-genetic-two-component-pathways.html
Cell & Microbiology Tue, 25 Nov 2014 10:08:52 ESTnews336132509China's yutu moon rover unable to properly maneuver solar panelsThe serious technical malfunction afflicting the life and continued operations of China's Yutu moon rover since the start of its second Lunar Night time hibernation in late January 2014 has been identified as an inability to properly maneuver the life giving solar panels, according to a top Chinese space official.http://phys.org/news/2014-03-china-yutu-moon-rover-unable.html
Space Exploration Tue, 04 Mar 2014 10:40:01 ESTnews313149646CMOS technology provides new insights into how biofilms formIn a study published today in Nature Communications, a research team led by Ken Shepard, professor of electrical engineering and biomedical engineering at Columbia Engineering, and Lars Dietrich, assistant professor of biological sciences at Columbia University, has demonstrated that integrated circuit technology, the basis of modern computers and communications devices, can be used for a most unusual application—the study of signaling in bacterial colonies. They have developed a chip based on complementary metal-oxide-semiconductor (CMOS) technology that enables them to electrochemically image the signaling molecules from these colonies spatially and temporally. In effect, they have developed chips that "listen" to bacteria.http://phys.org/news/2014-02-cmos-technology-insights-biofilms.html
Cell & Microbiology Mon, 10 Feb 2014 15:21:46 ESTnews311268093Research group devises a way to control surface plasmon polaritons(Phys.org) —A team made up of researchers from the U.K., China and Germany has developed, for the first time, a way to control surface plasmon polaritons (SPPs), perhaps paving the way to integrated plasmonic circuits. In their paper published in Light: Science & Applications, describing their achievement, the team details how they created a metal film with nanometer-sized holes in it set in a certain way to allow for controlling the quasiparticles that arise during the interaction between light and a metal surface.http://phys.org/news/2013-04-group-surface-plasmon-polaritons.html
Optics & Photonics Mon, 08 Apr 2013 09:20:05 ESTnews284629867Fujitsu USB 3.0-SATA Bridge IC Earns USB-IF Compliance Certification for SuperSpeed USBFujitsu Microelectronics America today announced that its USB 3.0-SATA bridge IC has been certified as compliant with the USB 3.0 standard by the USB Implementers Forum, Inc.http://phys.org/news/2010-01-fujitsu-usb-sata-bridge-ic.html
Hardware Fri, 08 Jan 2010 15:10:01 ESTnews182178172